Practice Protection (6.6.2.2) - Human Physiology - IB 12 Biology
Students

Academic Programs

AI-powered learning for grades 8-12, aligned with major curricula

Professional

Professional Courses

Industry-relevant training in Business, Technology, and Design

Games

Interactive Games

Fun games to boost memory, math, typing, and English skills

Protection

Practice - Protection

Learning

Practice Questions

Test your understanding with targeted questions

Question 1 Easy

What is the first line of defense against pathogens?

💡 Hint: Think about the body's physical barriers.

Question 2 Easy

Name a type of cell involved in the second line of defense.

💡 Hint: These cells engulf and digest pathogens.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

What is the primary role of phagocytic leukocytes?

Produce antibodies
Engulf pathogens
Initiate inflammation

💡 Hint: These cells literally eat pathogens.

Question 2

True or False: Vaccines can provide immunity without causing the disease.

True
False

💡 Hint: Think about how vaccines work.

1 more question available

Challenge Problems

Push your limits with advanced challenges

Challenge 1 Hard

Design a public health campaign to educate people on the importance of vaccinations. Include key points that emphasize the mechanism of memory cells and community immunity.

💡 Hint: Think about how you would present this information to someone unfamiliar with immunology.

Challenge 2 Hard

Discuss the implications of a weakened first line of defense in an individual—what might happen and how would the second and third lines of defense compensate?

💡 Hint: Consider examples of infections that occur due to skin injuries.

Get performance evaluation

Reference links

Supplementary resources to enhance your learning experience.